Twins add four to 40-man roster

Kepler hit .237/.312/.424 with nine home runs and 40 RBI in 236 at-bats with Class A Cedar Rapids. Vargas hit .267/.344/.468 with 19 home runs and 93 RBI in 457 at-bats with high Class A Fort Meyers. Polanco hit .308/.362/.452 with five home runs and 78 RBI in 465 at-bats for Class A Cedar Rapids.

Darnell went 10-10 with a 3.22 ERA, 1.33 WHIP and 120:45 K:BB ratio in 153 2/3 innings between Double-A New Britain and Triple-A Rochester.